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Site not loading when using ESR due to CSP

  • 4 antwoorden
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  • Laatste antwoord van chris.foster1

chris.foster1
chris.foster1
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One of our vendors websites does not load under Firefox ESR, with errors in the console pointing to CSP. Error is: Content Security Policy: The page's settings blocked the loading of a resource at inline ("default-src")

However if I load the site under the normal Firefox release, it displays correctly. When looking at errors in console, it is showing 3 errors for CSP, however it does not stop the site from working correctly. Content-Security-Policy: The page's settings blocked the loading of a resources at https://..... ("connect-src") or ("img-src")

The site is https://app.approvalmax.com If you get the login screen then the site is working otherwise just getting a green background when it is not working.

I am unsure why ESR and RR versions are behaving differently in this case. Using the latest versions of each.

One of our vendors websites does not load under Firefox ESR, with errors in the console pointing to CSP. Error is: Content Security Policy: The page's settings blocked the loading of a resource at inline ("default-src") However if I load the site under the normal Firefox release, it displays correctly. When looking at errors in console, it is showing 3 errors for CSP, however it does not stop the site from working correctly. Content-Security-Policy: The page's settings blocked the loading of a resources at https://..... ("connect-src") or ("img-src") The site is https://app.approvalmax.com If you get the login screen then the site is working otherwise just getting a green background when it is not working. I am unsure why ESR and RR versions are behaving differently in this case. Using the latest versions of each.

Bewerkt door chris.foster1 op

Gekozen oplossing

This was fixed by https://bugzilla.mozilla.org/show_bug.cgi?id=1640128 in Firefox 109.

which unfortunately was not backported to the Firefox 102 ESR.

It works in the Firefox 115 ESR which will become the only supported ESR in a month.

I'm checking to see if there is a workaround.

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Mike Kaply
Mike Kaply
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Which ESR?

chris.foster1
chris.foster1 Vraageigenaar
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Firefox ESR 102.14.0 I have also tested with older releases of ESR (which are deployed within the organisation) and they are doing the same result.

Mike Kaply
Mike Kaply
  • Moderator
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Gekozen oplossing

This was fixed by https://bugzilla.mozilla.org/show_bug.cgi?id=1640128 in Firefox 109.

which unfortunately was not backported to the Firefox 102 ESR.

It works in the Firefox 115 ESR which will become the only supported ESR in a month.

I'm checking to see if there is a workaround.

chris.foster1
chris.foster1 Vraageigenaar
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Thanks Mike. I have now tested using Firefox 115 ESR in my test VM and confirm that it does work. I'll need to get our team to look at pushing/deploying this through our organisation.